HazMat Awareness
Commonly Used Abbreviations

ACGIH American Conference of Governmental Industrial Hygienists
BLEVE Boiling Liquid Expanding Vapor Explosion
CAS Chemical Abstract Service
CERCLA Comprehensive Environmental Response, Compensation, and Liability Act
CFR Code of Federal Regulations
CGA Compressed Gas Association
CHEMTREC Chemical Transportation Emergency Center
COFC Container-On-Flatcar
DOE Department of Energy
DOT Department of Transportation
EHS Extremely Hazardous Substance
ERG Emergency Response Guidebook
EPA Environmental Protection Agency
GEBMO General Emergency Behavior Model
HMR Hazardous Materials Regulations
HMTA Hazardous Materials Transportation Act
IC Incident Command(er)
IDLH Immediately Dangerous to Life and Health
LC50 Lethal Concentration
LD50 Lethal Dose
LEL Lower Explosive Limit
LOX Liquid Oxygen
LPG Liquefied Petroleum Gas
MSDS Material Safety Data Sheet
NACA National Agricultural Chemical Association
NFPA National Fire Protection Association
NIOSH National Institute of Occupational Safety and Health
N.O.S. Not Otherwise Specified
NRC National Response Center
ORM-D Other Regulated Material
OSHA Occupational Safety and Health Administration
PCB Polychlorinated Biphenyls
PEL Permissible Exposure Limit
PIN Product Identification Number
PPE Personal Protective Equipment
RAM Radioactive Material
STCC Standard Transportation Commodity Code
TLV Threshold Limit Value
TLV/C Threshold Limit Value-Ceiling
TLV-STEL Threshold Limit Value Short-Term Exposure Limit
TLV-TWA Threshold Limit Value/Time-Weighted Average
TOFC Trailer-On-Flatcar
UEL Upper Explosive Limit